Well, Roly, if it wasn't for the fact that I'm on my way to ARSAG, I'd be getting the trusty blackfellow out of hibernation today.....
....and might even have got around to cutting the grass..
Since the quantity of sharkhole needed increases (I think) with the cube of the radius, I opted for an 18.5" as it's fine for one or two people. Put the lid on and shut off all the vents after use and you can use some of the coals the next time!
Hope you'll be getting a new job somewhere soon?